Firmware

1_ DH_XVR4x04-I_MultiLang_V4.001.0000001.4.R.211015.bin

Dahua firmware released Oct 15, 2021. May work with 1 device.

Download

Permanent copy on the Internet Archive (item page)

Hardware IDs this firmware's installer accepts (1 device). Names with placeholders such as x or XXX are board families.

Where these IDs come from

Read from inside the firmware (dahua package (zip variant)).

Flash layout: 12 partitions, 8 written by this firmware

From the recorder's Install.lua partition table.

Partition	Start	End	Size	Image	Filesystem	Built
param	0xa0000000	0xa02c0000	2.8 MB	GCIS.bin.img	—	2021-10-15
uboot	0xa02c0000	0xa0540000	2.5 MB	u-boot.bin.img	—	2021-10-15
env	0xa0540000	0xa0740000	2.0 MB	not written	—	—
kernel	0xa0740000	0xa0b80000	4.3 MB	uImage.img	—	2021-10-15
romfs	0xa0b80000	0xa2c80000	33.0 MB	romfs-x.squashfs.img	squashfs	2021-10-15
custom	0xa2c80000	0xa2d00000	512.0 KB	custom-x.squashfs.img	squashfs	2021-10-15
web	0xa2d00000	0xa3440000	7.3 MB	web-x.squashfs.img	squashfs	2021-10-15
logo	0xa3440000	0xa34c0000	512.0 KB	logo-x.squashfs.img	squashfs	2021-10-15
ext_usr	0xa34c0000	0xa3740000	2.5 MB	ext_usr-x.squashfs.img	squashfs	2021-10-15
dgs	0xa3740000	0xa3780000	256.0 KB	not written	—	—
config_fw	0xa3780000	0xa3a80000	3.0 MB	not written	—	—
config	0xa3a80000	0xa4000000	5.5 MB	not written	—	—

Other files for much of the same hardware, from any vendor.